All-in-one solar charge inverter 33
6.3 Handling measures for part of faults
Faults
Handling measures
No display on the screen
Check if the battery air switch or the PV air switch has been closed;
if the switch is in the "ON" state; press any button on the screen to
exit the screen sleep mode.
Battery overvoltage
protection
Measure if the battery voltage exceeds rated, and turn off the PV
array air switch and Mains air switch.
Battery undervoltage
protection
Charge the battery until it returns to the low voltage disconnection
recovery voltage.
Fan failure
Check if the fan is not turning or blocked by foreign object.
Heat sink over temperature
protection
When the temperature of the device is cooled below the recovery
temperature, normal charge and discharge control is resumed.
Bypass overload protection,
inverter overload protection
① Reduce the use of power equipment; ② Restart the unit to
resume load output.
Inverter short circuit
protection
① Check the load connection carefully and clear the short-circuit
fault points; ② Re-power up to resume load output.
PV overvoltage
Use a multimeter to check if the PV input voltage exceeds the
maximum allowable input voltage rated.
Battery missed alarm
Check if the battery is not connected or if the battery circuit
breaker is not closed.
